console.lua: calculate the max width more accurately

player/lua/console.lua

@@ -514,6 +514,7 @@ local function update()
         return
     end
 
+    local margin = 6
     local coordinate_top = math.floor(global_margins.t * screeny + 0.5)
     local clipping_coordinates = '0,' .. coordinate_top .. ',' ..
                                  screenx .. ',' .. screeny
@@ -546,7 +547,7 @@ local function update()
 
     local lines_max = calculate_max_log_lines()
     -- Estimate how many characters fit in one line
-    local width_max = math.ceil(screenx / opts.font_size * get_font_hw_ratio())
+    local width_max = math.floor((screenx - margin) / opts.font_size * get_font_hw_ratio())
 
     local suggestions, rows = format_table(suggestion_buffer, width_max, lines_max)
     local suggestion_ass = style .. styles.suggestion .. suggestions
@@ -566,7 +567,7 @@ local function update()
 
     ass:new_event()
     ass:an(1)
-    ass:pos(6, screeny - 6 - global_margins.b * screeny)
+    ass:pos(margin, screeny - margin - global_margins.b * screeny)
     ass:append(log_ass .. '\\N')
     if #suggestions > 0 then
         ass:append(suggestion_ass .. '\\N')
@@ -579,7 +580,7 @@ local function update()
     -- cursor appear in front of the text.
     ass:new_event()
     ass:an(1)
-    ass:pos(6, screeny - 6 - global_margins.b * screeny)
+    ass:pos(margin, screeny - margin - global_margins.b * screeny)
     ass:append(style .. '{\\alpha&HFF&}' .. ass_escape(prompt) .. ' ' .. before_cur)
     ass:append(cglyph)
     ass:append(style .. '{\\alpha&HFF&}' .. after_cur)